import pandas as pd

FILES = [
    "data/1_teacher.csv",
    "data/2_student_info.csv",
    "data/3_kaoqin.csv",
    "data/4_kaoqintype.csv",
    "data/5_chengji.csv",
    "data/6_exam_type.csv",
    "data/7_consumption.csv"
]

def load_teacher_data() -> pd.DataFrame:
    return pd.read_csv(FILES[0])

def load_stu_data() -> pd.DataFrame:
    return pd.read_csv(FILES[1])

def load_kaoqin_data() -> pd.DataFrame:
    return pd.read_csv(FILES[2])

def load_kaoqin_type_data() -> pd.DataFrame:
    return pd.read_csv(FILES[3])

def load_grade_data() -> pd.DataFrame:
    return pd.read_csv(FILES[4])

def load_exam_type_data() -> pd.DataFrame:
    return pd.read_csv(FILES[5])

def load_consumption_data() -> pd.DataFrame:
    return pd.read_csv(FILES[6])